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