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