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