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