One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(7,9)(8,13)(14,15)(33,34,39,40)(35,43,37,41)(36,45,46,42)(38,44,48,47)(1,2)(3,7)(4,8)(5,6)(9,11)(10,14)(12,13)(15,16)(17,18)(19,24)(20,25)(21,26)(22,23)(27,31)(28,29)(30,32)(34,40)(36,46)(41,43)(44,47) involution — undirected(4,12)(8,13)(10,16)(14,15)(18,23)(21,31)(24,29)(25,32)(33,35,39,37)(34,41,40,43)(36,44,46,47)(38,42,48,45)(1,2)(3,9)(4,8)(5,6)(7,11)(10,15)(12,13)(14,16)(17,19)(18,24)(20,26)(21,25)(22,28)(23,29)(27,30)(31,32)(33,36)(34,42)(35,44)(37,47)(38,43)(39,46)(40,45)(41,48) involution — undirected(1,3,5,11)(2,7,6,9)(4,10,12,16)(8,14,13,15)(17,20)(18,25)(19,27)(21,29)(22,30)(23,32)(24,31)(26,28)(33,37,39,35)(34,43,40,41)(36,44,46,47)(38,42,48,45)(1,4,5,12)(2,8,6,13)(3,10,11,16)(7,14,9,15)(17,21,22,31)(18,26,23,27)(19,25,28,32)(20,29,30,24)(33,38,39,48)(34,44,40,47)(35,45,37,42)(36,43,46,41)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.