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)(17,18,22,26,23,20,34,27)(19,28,31,29,33,43,32,24)(21,25,37,41,38,35,45,42)(30,40,36,44,47,48,46,39)(1,3)(2,6)(4,11)(5,10)(7,15)(8,14)(9,12)(13,16)(17,19,23,33)(18,24,20,29)(21,36,38,46)(22,32,34,31)(25,40,35,48)(26,43,27,28)(30,45,47,37)(39,42,44,41)(1,4)(2,7)(3,9)(5,12)(6,13)(8,16)(10,11)(14,15)(17,20)(18,23)(19,29)(21,25)(22,27)(24,33)(26,34)(28,32)(30,39)(31,43)(35,38)(36,40)(37,41)(42,45)(44,47)(46,48) involution — undirected(4,12)(7,16)(9,11)(13,15)(17,21,22,37,23,38,34,45)(18,25,26,41,20,35,27,42)(19,30,31,36,33,47,32,46)(24,39,28,40,29,44,43,48)(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.