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