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