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