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