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