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