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