One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(4,12)(7,9)(10,16)(17,18)(19,22)(20,27)(21,24)(23,28)(25,31)(26,30)(29,32)(33,34)(35,43)(36,41)(37,40)(38,47)(39,42)(44,45)(46,48) involution — undirected(1,2)(3,9)(4,8)(5,6)(7,11)(10,15)(12,13)(14,16)(17,19,21,26)(18,22,24,30)(20,25,28,32)(23,29,27,31)(33,35,39,37)(34,40,42,43)(36,44,47,46)(38,45,41,48)(1,2,5,6)(3,7,11,9)(4,8,12,13)(10,14,16,15)(17,18,21,24)(19,22,26,30)(20,23,28,27)(25,29,32,31)(33,36,39,47)(34,38,42,41)(35,44,37,46)(40,45,43,48)(1,2)(3,7)(4,8)(5,6)(9,11)(10,14)(12,13)(15,16)(17,18)(19,22)(20,23)(21,24)(25,29)(26,30)(27,28)(31,32)(33,36)(34,41)(35,44)(37,46)(38,42)(39,47)(40,48)(43,45) involution — undirected(1,3,5,11)(2,7,6,9)(4,10,12,16)(8,14,13,15)(17,19)(18,22)(20,25)(21,26)(23,29)(24,30)(27,31)(28,32)(33,37,39,35)(34,40,42,43)(36,46,47,44)(38,45,41,48)(1,4,5,12)(2,8,6,13)(3,10,11,16)(7,14,9,15)(17,20)(18,23)(19,25)(21,28)(22,29)(24,27)(26,32)(30,31)(33,38,39,41)(34,36,42,47)(35,45,37,48)(40,44,43,46)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.