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