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