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