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