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