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